$ git clone -n http://git.inferitos.ru/rpms/flex /var/lib/mock/inferit-8_8-build-25642-44582/root/chroot_tmpdir/scmroot/flex
Cloning into '/var/lib/mock/inferit-8_8-build-25642-44582/root/chroot_tmpdir/scmroot/flex'...
$ git fetch origin changed/i8c/flex-2.6.1-9.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/flex
 * [new tag]         changed/i8c/flex-2.6.1-9.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 603c700 edit changelog for import flex-2.6.1-9.el8